11,309 Results for

Senior Security Jobs in Greenbelt, MD

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Sr Cloud Security Engineer PlanIT Group

Falls Church, VA

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Experience: 8+ years in a technical Cybersecurity Engineering role, with at least 4 years focused on large-scale cloud or hybrid environments, and a portfolio of projects where AI or Machine Learning was directly applied to solve security or operational scaling problems. • API-First Automation: Deep expertise in building "glue code" that connects disparate COTS and custom applications via secure, automated APIs to streamline cross-functional business activities.

Today

Senior Legal Counsel- Government Contracts Jobot

Tysons, VA

$200,000–$300,000 / year
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The organization is interested in connecting with experienced attorneys who bring a strong combination of government contracting, regulatory compliance, commercial contracting, executive counseling, and legal leadership experience. Information collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal.

10 days ago

Senior Network Resident Engineer – Enterprise Security & Switching (Top Secret) Jobot

Alexandria, VA

$140,000–$190,000 / year
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Information collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal. You'll support client engineers on new deployments, act as the primary contact for operational issues, troubleshoot firewall, routing, and switching problems, and work cases with the manufacturer's support center through to resolution.

10 days ago

Senior Databricks Migration Engineer PlanIT Group

Reston, VA

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Lead the technical migration from legacy SQL Server stored procedures and ADF pipelines to Databricks Lakehouse (Delta Lake), ensuring best practice Lakehouse design. They are responsible for designing and creating systems that collect, manage, and convert raw data into usable information for data scientists and business analysts to interpret and enables the agency to make smarter decisions and optimize operations.

Today

Senior Ab Initio Developer Credence

McLean, VA

$130,000–$160,000 / year
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Experience building integrations across APIs, legacy systems, and heterogeneous data sources, with the ability to troubleshoot performance issues and optimize large-scale ETL workflows. This role is well suited to someone who enjoys working across complex data environments, partnering with technical and business stakeholders, and contributing to solutions where reliability, performance, and quality matter.

30+ days ago

Senior SharePoint Developer PlanIT Group

Arlington, VA

Remote

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Ability to convert business requirements into technical solutions using the appropriate and applicable SharePoint web part(s) using a combination of workflows and Web Development technologies. • Designing and developing custom solutions using SharePoint Framework (SPFx), Power Platform, and Microsoft Graph to meet evolving business needs.

3 days ago

Senior SAP Developer PlanIT Group

Washington, DC

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Leads a group of engineers, analysts, and/or technicians assigned for the duration of a project or may function as ongoing lead within a group of engineers associated with one or more technical areas within the telecom function (such as, but not limited to, network design, engineering, implementation, or operations/user support). • Ability to develop functional requirements specifications, data mappings, function mapping, setting of configuration tables and setting of transaction/control tables.

3 days ago

Sr. Software Engineer -CTJ- Poly Microsoft

Reston, VA

$119,800–$234,700 / year

Masters Degree in Computer Science or related technical field AND 6+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python OR Bachelors Degree in Computer Science or related technical field AND 8+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python OR equivalent experience. You will work on distributed systems that enable Power Platform services to function in isolated, air‑gapped environments, partnering with Public Cloud teams to bring features to parity while ensuring those features meet the constraints of sovereign deployments.

Today

Senior SerDes & Analog Layout Design Engineer Microsoft

Washington, DC

$119,800–$234,700 / year

Doctorate in Electrical Engineering, Computer Engineering, Computer Science, or related field AND 1+ year(s) technical engineering experience OR Masters Degree in Electrical Engineering, Computer Engineering, Computer Science, or related field AND 4+ years technical engineering experience OR Bachelors Degree in Electrical Engineering, Computer Engineering, Computer Science, or related field AND 5+ years technical engineering experience OR equivalent experience. The Semi & Custom IP team develops advanced analog and mixed-signal IP, including D2D SerDes interfaces, for next-generation AI accelerators, cloud infrastructure, and custom silicon platforms powering Microsoft’s future AI services and datacenter offerings.

Today

Senior Database Developer Cherokee Nation Businesses

Washington, DC

We are seeking an experienced Senior Database Developer to support federal agency operations with hands-on expertise in relational databases, data warehousing, and data governance. As a trusted partner for more than 60 federal clients, Cherokee Federal LLCs are focused on building a brighter future, solving complex challenges, and serving the government’s mission with compassion and heart.

Today

Senior Oracle Database Enterprise Architect System One

Merrifield, VA

$125,000–$135,000 / year
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Experience 10+ years of IT experience, with significant experience in enterprise architecture, solution architecture, or Oracle database architecture. System One IT is staffing a direct-hire opening for a Senior Oracle Enterprise Architect with a respected systems integrator, supporting a civilian federal end-customer.

30+ days ago

Sr. Level UAM Engineer System One

Lorton, VA

$106 / hour
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System One, and its subsidiaries including Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. Support the User Activity Monitor Software solution, executing all updates, changes, deployments, and other sustainment activities.

4 days ago

Senior Specialist, Federal ServiceNow Developer KPMG

Washington, DC

If you're looking for a firm with a strong team connection where you can be your whole self, have an impact, advance your skills, deepen your experiences, and have the flexibility and access to constantly find new areas of inspiration and expand your capabilities, then consider a career in Advisory. These include the duties and responsibilities listed above, as well as the abilities to adhere to company policies, exercise sound judgment, effectively manage stress and work safely and respectfully with others, exhibit trustworthiness, and safeguard business operations and company reputation.

30+ days ago

Sr DevSecOps Engineer System One

Fort Meade, MD

$145,000 / hour
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This role bridges full-stack software development with automated security gates, enforcing compliance with DoDI 8430 (Accelerated Mission Software Development), the DoD Software Modernization Strategy, and Continuous Authorization to Operate (cATO) criteria. cATO & Governance Automation - Implement automated policy-as-code to satisfy continuous compliance gates under DoDI 8430 and OSD CIO cATO requirements (Real-time Visibility, Active Cyber Defense, Pipeline Attestation).

12 days ago

Senior Director, Product Management, Decisioning Platforms Discover Financial Services

McLean, VA

$269,600–$307,700 / year

Retail Bank is seeking a highly strategic and technically deep Senior Director of Product to lead our platform teams, with a specific, critical focus on building our next-generation automated fraud defense engine. The Senior Director of Product will evaluate how the decisioning platform engine converges with or works alongside enterprise infrastructure and map out the architectural path to make that integration a reality.

7 days ago

Senior Full Stack Developer – (React, Node, AWS & Agentic AI) Dev Technology Group

Reston, VA

$116,000–$190,000 / year

As a Washington Post Top Workplace award winner for the past THIRTEEN years in a row, the Top Workplaces USA for the past five years, and a recipient of the Companies As Responsive Employers (CARE) Award for the past six years, Dev Technology employees enjoy: Generous and flexible time-off policy. Use AI-powered development tools such as Kiro, Amazon Q Developer, GitHub Copilot, or similar agentic AI environments for code generation, refactoring, testing, and specification-driven development.

30+ days ago

Senior Director, Pricing Operations Sophos

Washington DC, DC

Sophos goes to market with a global partner ecosystem, including Managed Service Providers (MSPs), Managed Security Service Providers (MSSPs), resellers and distributors, marketplace integrations, and cyber risk partners, giving organizations the flexibility to choose trusted relationships when securing their business. Sophos offers industry-leading managed detection and response (MDR) alongside a comprehensive portfolio of cybersecurity technologies — including endpoint, network, email, and cloud security, extended detection and response (XDR), identity threat detection and response (ITDR), and next-gen SIEM.

17 days ago

Senior Systems Engineer - Global Financials VAST Data

Washington DC, DC

We are building the enterprise software infrastructure to capture, catalog, refine, enrich, and protect massive datasets and make them available for real-time data analysis and AI training and inference. Our success has been built through intense innovation, a customer-first mentality and a team of fearless VASTronauts who leverage their skills & experiences to make real market impact.

22 days ago

Senior Systems Engineer - Federal VAST Data

Washington, DC

Demonstrate technical leadership and subject matter expertise on storage products, distributed storage architectures, file systems, and competitive storage offerings in the DAS, NAS and SAN product spaces. We are building the enterprise software infrastructure to capture, catalog, refine, enrich, and protect massive datasets and make them available for real-time data analysis and AI training and inference.

22 days ago

Senior Systems Engineer - Federal (CIV) VAST Data

Washington DC, DC

As a Senior Systems Engineer supporting the Department of Energy (DOE), you will act as a trusted technical advisor to national laboratories, research institutions, and federal integrators—guiding customers through architecture design, evaluation, and deployment of VAST’s data platform for mission-critical workloads. Designed from the ground up to make AI simple to deploy and manage, VAST takes the cost and complexity out of deploying enterprise and AI infrastructure across data center, edge, and cloud.

22 days ago

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Senior Security Jobs in Greenbelt, MD

Sr Cloud Security Engineer PlanIT Group

Senior Legal Counsel- Government Contracts Jobot

Senior Network Resident Engineer – Enterprise Security & Switching (Top Secret) Jobot

Senior Databricks Migration Engineer PlanIT Group

Senior Ab Initio Developer Credence

Senior SharePoint Developer PlanIT Group

Senior SAP Developer PlanIT Group

Sr. Software Engineer -CTJ- Poly Microsoft

Senior SerDes & Analog Layout Design Engineer Microsoft

Senior Database Developer Cherokee Nation Businesses

Senior Oracle Database Enterprise Architect System One

Sr. Level UAM Engineer System One

Senior Specialist, Federal ServiceNow Developer KPMG

Sr DevSecOps Engineer System One

Senior Director, Product Management, Decisioning Platforms Discover Financial Services

Senior Full Stack Developer – (React, Node, AWS & Agentic AI) Dev Technology Group

Senior Director, Pricing Operations Sophos

Senior Systems Engineer - Global Financials VAST Data

Senior Systems Engineer - Federal VAST Data

Senior Systems Engineer - Federal (CIV) VAST Data

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